K
Keith the beef
Can anybody please simplify some calculations for me please i have a 100A PME supply that is supplying a house roughly 100-150 metres away. it is run in 50mm 4 core SWA three phase and neutral they have run a ten mm cpc seperate alongside it, No continuity from the armourings as they have glanded it into Bakelite on the fuse board, as there has been a square hole knocked out in the bottom of the board.
Didn't see this at first as there was that much muck/dust inside the board.
Now what i'm after is can anyone remind me of the calcs i need t find out whether the armourings are suitably sized if they were connected?
Personally i don't know why they ran a 10mm alongside it as i don't believe this will carry anywhere near the fault current.
I have looked through my regs book but am having a proper no brain day (in fact year) too much on my plate at the minute.
I am wondering if they have thought that a shortfall in the calcs for the armourings can be bought up to regs with just a 10mm.
Not done any calcs like this for a while need brain refreshing
Didn't see this at first as there was that much muck/dust inside the board.
Now what i'm after is can anyone remind me of the calcs i need t find out whether the armourings are suitably sized if they were connected?
Personally i don't know why they ran a 10mm alongside it as i don't believe this will carry anywhere near the fault current.
I have looked through my regs book but am having a proper no brain day (in fact year) too much on my plate at the minute.
I am wondering if they have thought that a shortfall in the calcs for the armourings can be bought up to regs with just a 10mm.
Not done any calcs like this for a while need brain refreshing
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